Wrench.



A. M. LE PIERRE.

WRENCH'.

APPLICATION FILED AUG.27| 19|?.

1 ,286,668. Patented Deo. 3, 1918.

2 SHEETS-SHEET l'.

A. M. LE mami.

WRENCH. APPLICATION FILED AUG. 27,1911- Patented Dec. 3, i918.

2 SHEETS-SHEET 2 wlwwtv Wam/26 /jW/"e n.' noun 'uns en. immuun. uusumuraWRENCH.

f Specification of Letters Patent. y Patented 6C, 3,A y1918.

f Application filed August27, 1917.` $eri-a1No.-18$,418. l

To rall@ hom may concern Be.. it vlmown that I, neeesm M; PIERRE, acitizen of the 'United' States, residing ,at'KorbeL in the county of`Humboldt and'fSta-te' Iof California, have invented cer tainxznew anduseful Improvements .in Wrenches; andV I do declare the following to bea. full, clear,- and exact description of the invention, 4such as willenable others vskilled. in the art to 4which it appertains' to make'a'nduse the-same.A

My invention has for its object-toprovide a .comparatively simple andinexpensive, yet a highlyeflicient and durableiwrench so constructed asto forcibly grip the objectto be j turned.

With the foregoing general object in view,

` the invention resides in the novel features of construction and uniquecombinations of parts to be hereinafter fully described and.

claimed, the descriptivematter being sup plemented by the accompanyingdrawings which form a part of this specification' and in which In thedrawings above briefly describedv the numeral 1 designates a `[iatsubstantially rectangular carrier block, saidblock having a longitudinalopening 2 formed therethrough to slidably receive a shank 3 whichextends rearwardly from one of the jaws 4 ofthe wrench, any suitablemeans being provided for holdingthe shank ink adjusted position.Preferably employed for this purpose, however, is a pivoted dog 5whichis carried by the block 1to swing into a recess 6 in the rearendthereof, the inner side of ception in longitudinally spaced sockets 8 if is by preference carried by the rearfedge of y said dog having one ormore teeth 7 for reformed in the shank 3. Although the dog 5 the carrierblock l, it will be obvious that it could well be mounted on one sidethereof, and that if this arrangement were employed,

the location of the openings `8-would necessarily be varied. W'hen thedog 5'V is positionedas shown in fthedrawings, the sides thereofwillpreferably be provided with a pairv ofwings `9,'fwhich 'contact withthe outer sides ofthe block 1 as vshown more clearly in Fig. 4. i l

The front edge of the carrier block 1 is provided with aive'rticallydisposedchannel 10 in which-a vertical web 11 on the rear edge of asecond" andfsliding jaw 12 is received, said web having a vlongitudinalslot 18 receiving a pin 14 which passes through the block 1. lThecoacting faces of the jaws 4 and 12 may be of any suitable design, butthey are preferably provided with depressions 15 extending transverselythereof to receive a pipe therein, the bottoms of said depressions'being serrated in any preferred manner. The remainder of the jawfaces'is preferably smooth so that nuts may be gripped therebetween topermit the wrench to be used both as a monkey wrench and a pipe wrench.Due to the depressions 15, the danger of crushing delicate pipes isreduced to the minimum although an effective grip is maintained uponsaidpipes.

A pair of ears 16 extend rearwardly from the carrier block 1, onopposite sides` of its channel 10, and one front corner of a handle 17is pivoted at 18 between said ears, the

other front corner of said handle being. received in a notch 19 in therear end of the `jaw 12 and pivoted to said jaw by a transsliding thejaw 12 toward and away from the jaw 4, as the haifdle is oscillatedduring the operation of the tool. It will be ob-r served` that when apower stroke is taking place, the jaw 12 will be moved toward the jaw 4so-that the article being turned will be effectively gripped.` yWhen,however, the re turn stroke is taking place, the jaw 12 .will be movedaway from the jaw 4 so that the wrench may readily turn upon the workfor a new grip. The rearward movement of the jaw 12 is limited bycontact of the outwardly curved posterior edge 12 thereof with theinwardly curved anterior edge 1 of the slide 1, and hence there is nodanger of the front end wall of slot 13 shearing the `pin 14.

From the foregoing, taken vin connection with the accompanying drawings,it will be lOv vvvill be highly efficient anddurable'.` Since" probablythe best resultsare obtainedrorn"` the specicfeatu'res ofconstructionshovvnf and described, such features constitute thepreferred forni of the tool. I Wish `1t `understood, however, thatwithin theseope of" the invention asl claimed, numerous minor changesmayv Well be `inade Withoutsacrificing the principal Iclaim: f A. Wrenchcomprising` a slide oi? Substair tially flat ormatiomthe vposterioredgewporf advantages.

tion of said slide having a longitudinal. guide Copies 4of this patentvmay be `obtained.for

wardmovement of Saidvjaw, an imag-rai fue Weboisaid posterior edge ofsaid jaw ,re- `ceived slidajblysaid groove and having a A longitudinalslot, a pinpassing through said slide and slot, a pair'of ears on therear fend of each of said jaw and slideya longitudinal handle -receivedbetween and pivted at lat- ,eral 1y ,spaced;y points to said ears,vvhereby oscillation of said handle Will move said jaw forwardly andrearwardly,y fan'additionalj avv having a longitudinal shank -receivedvslidf ablyz-in-said1 guide opening, and means-afer f holdinglsa'idshank.in usted positions Y f Initestimony whereof =I haveLhereuntoLset' 35 myhandinithe presence of tvvo subscribing Witnesses. 'i r i Y l "AUGUSTE'PIERRE' .Y Witnesses: i 'l SADE A. PATEiyLiUpE,

\ MeNnEpMENDES.

